Electric-lamp socket.



C. B; CLARK.

ELECTRIC LAMP SOCKET.

APPLICATION FILED JUNE 4.1914.

1,153,195.; PatentedSept. 14, 1915. &\ I

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. parts of the device.

, cnannns'ntrn'rfcnank; or EAST ORANGE, NEwJnnsnY.

' ELECTRIC-LAM? socket".

To all 'w/wmz't may concern Be it known thatI, Cumulus BURT CLARK,

citizen of the United 'States, residing at specification.

This invention relates to an improvement inholders or supports for electric lamps and the shades accompanying the same, andits.

novelty consists in the. construction and adaptation of the parts as will be more fully hereinafter pointed out.

The object of the inventionis to provide a simple, economical and efiicient means for supporting the insulating basefinto which the usual socketofan' electric lamp is inserted and simultaneously supporting a lamp shade or globe, such as is used"with such lamps, and to provide means for varyingthe size of the globe without changing the other A further object'ot' the invention is to so construct the parts that the insulating base of the electric lamp and the shade holder lay he removed from the support without disturbing the electrical conducting connections. e

In the drawings, Figure 115 a central longitudinal section Ora device embodying the.

invention. Fig. 9, is a perspective of the stepped supporting annulus. Fig. 3 isa pers ective of the insulating base and holder, and Fig. 4 is an elevation of the globe holder showing a portion of the globe secured there n.

In the drawings, 10 is a hickey of any suitable form through which the electric conductors leading to the lamp are passed in the usual manner.

11 is an externally threaded pipe engaged with the threads of the hickey and supported therefrom, and from whichthe other parts as hereinafter described are suspended.

Arranged beneath the hickey is a support 12 in the form o'fa stepped annulus provided with a centrally threaded aperture 13..

The upper step of the annulus is externally threaded as indicated at 14?, and the lower step of the annulus which is of smaller diameter is externally threa ded as indicated at It is also nrovided-wlth an annular groo e or recess 16 to reduce its weight, and on its lower surfaceit is provided with down" wardly projecting positioning pins indicated Specification of Letters Patent. Q' Applieati onfiled 111x184, 1914;. Serial norscas vo,

lE-atented sle t. in-1915.

at 17. Inefi'ect it'comprises two'externally threaded disks with a common central aperture the larger disk superimposed upon the smaller and. the whole piece made integral. Securedto and depending from the lower step of the annulus 12 is the insulating socket support 20. It comprises va cylindrical casing open at the top and bottom and "internally threaded at "the top as indicated at 21 to engage the externalsthreads on the lower step of the annulus. Near its bottom annular flange 22 below which it is provided with an outwardly extending reverted annular-flange 23. forming a lower terminal or bead.

Within the support isarranged an insulating socket which is of any suitable form. An 'of the forms common to the art may be employed, but whatever one is employed should be providedwith diamet it is provided with an inwardly extending I rically arranged notches 31 and 32 at its up- 1 per edge, these-being adapted to be engaged by the positioning pins 17 projecting down 30 Ward from the annulus 12, and it should also be provided witha shoulder as indicated at 33 whereby it may rest by gravitv u on the annular flange 22 of the support 20. It should, of course, be provided with the usual threadedmetallicsleeve to receive the lamp and with the necessary electrical conductors, which should be connected in the manner usual to the art, With the conductors passing down from the hickey through the inside of the device to the socket. These insulating sockets can be purchased in the open market and form no part of my-invention and their construction is, therefore, only,

referred to in so far as it relevant to an understanding of the present invention.

A globe support of general cylindrical form, open at the top and bottom and internally threaded at its upper end as indicated at 41 is secured by means of such threads to the upper step of the annulus 12.

At its lower end it is expanded to form a depending flange 42 adapted to receive the usual globe 43 and is provided with. clamping screws 14 to hold the globe in place. At the place where it is expanded from the general cylindrical forin as indicated at 45 there is formed quite a substantial shoulder i upon'which is placed and which is adapted to receive the lower rim or edge 46 of a canopy 47,*which is adapted to conceal the other parts of the deviceend toform an ornamental element, which extends to the screw threads or that the hickey or other form of support for the entire device should bejsecu'red to such annulus by a threaded pipe. Other forms of'connections rigid enough for the purpose and usual to the art and equivalent to the connection stated may be employed if the conditions of the use of the device render it expedient to do so.

The globe support 40 may be made of any diameter at the bottom where it is expanded to form the flange 42, and there-fore may be adapted foruse with a lamp shade or globe having any diameter at its upper edge where it is engagedby and supported upon such flange 42. It is necessary, however, that the diameter of the upper. threaded portion 41 of the shade holder shall remain constant in order that it may properly engage a the external threads 14 of the annulus 12. I

I claim:

of the upper step 1. A combined electric lamp socket and shade holder, comprising a stepped annulus having an internally threadedcentral aperture, and two externally threaded steps, a hollow cylindrical socket holder-threaded'on the lower step and a hollow cylindrical shade holder threaded on the upper step.

2. A combined electric lamp socket and shade holder having an internally threaded central aperture, and two externally threaded-steps, a hollow cylindrical socket holder threaded on the lower step and a hollow cylindrical shade holder threaded on the upper step, the lower step being provided with means to engage the socket within the holder to prevent the rotation of the latter.

3. A combined electric shade holder, comprising a stepped annulus comprising a stepped annulus connecting it to the smallest lamp socket and connecting the annulus at said aperture with a support, a socket holder'and means for connecting it to the lower step of the annulus, a shade holder and means for con necting it with the upper step of the an.-

nulus.

5. In combination a hickey, an annulus arranged beneath the same and supported therefrom, a socket holder, a connection between it and the annulus, a shade holder and a connection between it and the annulus, a

socket in the holder and means on. the top to engage the socket toprevent its rotation. I 6. A combined electric lamp socket and shade holder, threaded annulus and means for connecting the annulus with a support, a socket holder and a shade holder, said annulus provided with a plurality of externally threaded portions arranged for holder within the shade holder.

7 A combined. electric lamp socket and shade holder, comprising an annulus having a central aperture and provided on its periphery with threaded portions, said portions being of different diameters, means for connecting the annulus at said aperture with a support, a socket holder and means for threaded portion of the annulus, a shade holder and means for connecting it to the largest thread-- ed portion of the annulus.

In testimony whereof I aflix my signature in presence of two witnesses.

' CHARLES BURT CLARK.

Witnesses:

" MARY H. Lewis, ALDA L. MILLER.,

consisting of an internally supporting. the socket 

